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Evaluation of reinforcement on the mechanical behavior of partially bonded fiber/matrix interface

机译：增强对部分粘结的纤维/基体界面力学性能的评估

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This paper aims at introducing a new natural composite used as soil stabilizer with particular application in geotechnical engineering. The fibers introduced in the present study could be used as effective soil reinforcement. This research proves the feasibility of the use of modified jute/polypropylene in lime and cement composites and studies their effects on the tensile and compressive strength of the matrix. In general, the optimal mechanical performance of natural composites and durability depends on the optimization of the interfacial bond between natural fiber and matrix. Since the fibers and matrices are chemically different, strong adhesion at their interfaces is needed for an effective transfer of stress and bond distribution throughout an interface. In this paper a theoretical approach for the identification of elastic modulus in composite interfaces is proposed in detail with a reasonable error. The theoretical approach is based on the method using a sum of least squares criterion. The approach is applied through optimization techniques, using analytical sensitivities and correlating adhesion with Young's modulus. The validity and potentiality of the proposed technique is discussed and the results demonstrated the versatility, accuracy, and efficiency of the presented approach. The applied method also appears to be a simple way of predicting the modulus of elasticity in composite interfaces. This leads to a discussion of the most promising stabilization methods for soil reinforcement and the outlook for the future.
机译：本文旨在介绍一种新型的天然复合材料作为土壤稳定剂，特别是在岩土工程中的应用。在本研究中引入的纤维可以用作有效的土壤加固。这项研究证明了在石灰和水泥复合材料中使用改性黄麻/聚丙烯的可行性，并研究了它们对基体的拉伸和压缩强度的影响。通常，天然复合材料的最佳机械性能和耐久性取决于天然纤维和基质之间的界面键的优化。由于纤维和基体在化学上是不同的，因此需要有效地传递应力和在整个​​界面上的键分布，在其界面处必须具有牢固的附着力。本文提出了一种在合理误差的前提下识别复合材料界面弹性模量的理论方法。理论方法是基于使用最小二乘和准则的方法。该方法是通过优化技术来应用的，该方法使用分析灵敏度并将粘附力与杨氏模量相关联。讨论了所提出技术的有效性和潜力，结果证明了所提出方法的多功能性，准确性和效率。应用的方法似乎也是预测复合材料界面弹性模量的简单方法。这就引起了对土壤加固最有希望的稳定方法的讨论以及对未来的展望。

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